The former Ravenswood resident, 35, was accompanied by Launceston detectives Darren Turner and Jason Savage, who flew to Adelaide on Monday to pick up the gym instructor.

Sinclair is alleged to have breached his parole by leaving Tasmania in March.

He was released from prison in September last year after serving eight years for a rampage that saw him attack three women in less than three hours in February 2002.

Then 27, he first grabbed a young woman and dragged her backwards through Yorktown Square, then attacked a 65-year-old woman at Newstead with a one-metre piece of wood, before raping a severely disabled woman, also at Newstead.

In between the attacks he was discovered outside a girls' dormitory at the Scotch Oakburn College boarding house but fled after he was confronted.

It is understood Sinclair's parole conditions banned him from leaving Tasmania and he allegedly did so despite being refused permission to move to South Australia.

It is also understood he has a child in South Australia and had become a grandfather, which prompted his decision to leave.

After walking Sinclair through Launceston Airport to a waiting police car yesterday, detective senior constables Turner and Savage confirmed Sinclair had not opposed extradition in an Adelaide court yesterday.

"He understands he has done the wrong thing and appears to want to serve out the rest of his sentence so he can get on with his life," Detective Senior Constable Turner said.

Sinclair will be released later next year.